The Hebrew noun metsudah (מְצוּדָה) refers to a fortress, stronghold, or inaccessible place of refuge. It denotes both natural mountain fortresses and built structures designed for defense. The word appears over 20 times in the Old Testament, often as a metaphor for God as the ultimate place of security.
In the Psalms, God himself is called a metsudah — a fortress into which the righteous flee and find safety (Psalm 18:2; 31:3). This metaphor draws on Israel's experience of mountain strongholds as places of military refuge, elevating the image to describe the ultimate security that only God provides. David repeatedly used this language from his years as a fugitive hiding in the rocky wilderness of Judah. The theological message is clear: human fortresses fall, but the God who is our stronghold never fails.